hi,
i recently had this strange bug with an ifstream and i figured out the problem, but i dont understand it. this is for my 2d map editor for my tile based RPG. each map can have multiple tilesets. each tileset has a .txt file which contains the data for this tileset (SOLID or NONSOLID for each tile).
anyway, for some reason i was getting garbage values when i got to the third tileset data file. it didnt matter which data file, but it was always the third one, and it only happend if there was 3. i only have 3 tilesets, so i couldnt test it with more then 3, but with 1 or 2 this wasnt a problem.
anyway, heres what the broken code looked liked:
ifstream file_in;
for(int i = 0; i < tilesets.size(); i++)
{
file_in.open(tilesets.data_path);
int x;
file_in >> x;
file_in.close();
}
now, when tilesets.size was == 1 or 2, it worked fine, but when there was 3 tilesets, on the third go, the x would be a garbage value, like 2483843 or something like that. it wasnt the text file, either, because i tried switching up the order of the tileset, and it was always the last (3rd) tileset who's data was read in bad.
anyway, i was going crazy trying everything trying to fix the bug. i got it to work by just opening the file in the contructor instead of with .open(). like this:
for(int i = 0; i < tilesets.size(); i++)
{
ifstream file_in(tilesets.data_path);
int x;
file_in >> x;
file_in.close();
}
does anyone know why the first code wouldnt work but the second code would? thanks for any help
